Hi, unfortunately my mechanic says that my Citroen C3 1.4 16V 90hp leaking oil from the head gasket before replacing the gasket, I wanted to know if you can with Valvoline MaxLife groped to solve the problem. I await your responses. thanks

IMO Maxlife is good for something like an oil pan gasket, valve cover gasket, or any other gasket that is not "super critical". A head gasket should be replaced asap, the right way. It sucks, but my guess is if it is leaking oil it will eventually get worse and you could end up with a milkshake in your crank case, no one wants that. (could lead to a pretty badly damaged engine)

If it is leaking that bad, I would check for warpage or a crack. Head gaskets "usually" do not fail that way.

+1 You will want to find out WHY its has failed.. unless these are a common issue for these cars, sometimes head gaskets just fail. You don't want to fix the problem, without addressing an underlying cause.

Generally, head gaskets are metal. Nothing to swell, treat, or "condition, like other seals. The only fix is the replace the gasket...preferably, before it starts leaking coolant too....

Though The gasket is steel. There still is rubber sealing for coolant and oil canals in the gasket.

Depends on the gasket. I've seen many that are simply steel, and when crushed, the impressions in the steel seal oil and coolant passages...but I think that either way, the maxlife is unlikely to make any difference...

In my opinion no oil is going to stop a head gasket leak. Also head gaskets do fail, the rest of the head could be just fine. I have put head gaskets on several 4cyl and not had to mill the head. The gasket just fails over time. Fix it, don't put any of that head gasket repair junk in the antifreeze either, asking for coolant system issues later IMO